Abstract: An insert (1) for treating human or animal body cavities, in particular ear cavities, comprises an operating element (2) which is located at one end of the insert intended to be introduced into the cavity and to come into contact with the internal walls of the latter, and is expandable from a radially compressed configuration, in which it may be introduced into the cavity without substantial interference with the internal walls, to a radially expanded configuration having a substantially larger cross-section relative to the compressed configuration, in which radially expanded configuration the operating element (2) is pressed against the internal walls of the cavity.

Abstract: A covering for protecting surfaces in general, which comprises a sheet body that forms an internal supporting frame, to which a layer of self-sealing thermoplastic polymer is connected; the layer forms at least one face of the sheet-like body, the sheet-like body having protrusions for engaging a surface to be covered.

Abstract: A covering for protecting surfaces in general, which comprises a sheet body that forms an internal supporting frame, to which a layer of self-sealing thermoplastic polymer is connected; the layer forms at least one face of the sheet-like body, the sheet-like body having protrusions for engaging a surface to be covered.

Abstract: A tubular element for forming pipes for trunk lines, purification plants and sewage systems in general, which comprises a tubular body provided with elements for connection to the tubular body of laterally adjacent tubular elements, a lining being provided on the internal surface of the tubular body. The lining comprises a sheet-like element with an internal reinforcement frame that is connected to a layer of self-sealing thermoplastic polymer that forms the internal surface of the tubular element, the sheet-like element forming elements for engaging the internal surface of the tubular body.